retaining
51key retaining — adj. 1. of or pertaining to a lock which must be locked before its key can be removed. 2. of or pertaining to a cylinder or lock which may prevent removal of a key without the use of an additional key and/or tool …
52non key retaining — adj. of or pertaining to a lock whose key can be removed in both the locked and unlocked positions …
53shackle retaining pin — n. a pin which keeps an unlocked shackle heel in the case …
54Truarc retaining ring — An internal or external circlip of rectangular cross section with holes for easier installation and removal …
55title retaining note — Same as title retention note …
56Revetment — ♦ Retaining wall of stone or timber of an earth bank or sides of a ditch. (Kenyon, John R. Medieval Fortifications, 211) …
57Geotechnical engineering — [ Boston s Big Dig presented geotechnical challenges in an urban environment.] Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. Geotechnical engineering includes investigating …
58Listed buildings in Liverpool — Partial and incomplete lists of listed buildings in Liverpool, England. A *July 28 1952 II Abercromby Square L7 Garden House *July 28 1952 II Abercromby Square (west side) L7 Nos. 1 to 7 (consec) No. 7a *July 28 1952 II Abercromby Square (south… …
59Monarchies in the Americas —   American monarchies …
60Immortal DNA strand hypothesis — The immortal DNA strand hypothesis was proposed in 1975 by John Cairns as a mechanism for adult stem cells to minimize mutations in their genomes.Cairns, J. 1975. Mutation selection and the natural history of cancer. Nature (London) 255: 197… …
